For this year, ideally we'd have also bought Griezmann and played Messi at AM and Iniesta/Roberto at CM (not happening, not this season), without the need for Paulinho but Samper as Busquets' backup.
But with what we have now, I'm really hoping on Roberto and the kids (especially at defence and midfields) to step up.
Just sell Douglas and Turan, and send Munir on loan or sell with a buy back option.
Then next year we buy Dybala, Griezmann, Grimaldo and de Ligt - at the beginning of the transfer period (if possible already have agreements in place during the season).
Promote Palencia, Aleñá, Vitinho and José Arnáiz (or bring back Munir).
Bring back Samper and Marlon from loan.
Sell Vermaelen, Mascherano (bless his heart), Vidal, Digne, Paulinho, Rakitić, Alcácer.
*Roberto/Aleñá/Iniesta